Paracetamol EP Impurity C CAS 3964-54-3
| CAS No. | 3964-54-3 |
| Molecular Formula | C8H8ClNO2 |
| Molecular Weight | 185.61 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Paracetamol EP Impurity C under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Paracetamol EP Impurity C (CAS 3964-54-3), a pharmacopoeial impurity reference standard (molecular formula C8H8ClNO2, MW 185.61 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C8H8ClNO2, Paracetamol EP Impurity C contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 185.61 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C8H8ClNO2 |
| Molecular Weight | 185.61 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Paracetamol Standards
- Paracetamol EP Impurity M (CAS 1752-24-5)
- Paracetamol EP Impurity J (CAS 539-03-7)
- Paracetamol EP Impurity B (CAS 1693-37-4)
- Paracetamol EP Impurity A (CAS 614-80-2)
- Paracetamol EP Impurity G (CAS 34523-34-7)
- Paracetamol (CAS 103-90-2)
- Paracetamol EP Impurity I (CAS 118-93-4)
- Paracetamol EP Impurity E (CAS 99-93-4)
Recommended Standards
- Clopidogrel Impurity 68 (CAS 6212-33-5)
- Nintedanib Impurity 67 (CAS 40872-87-5)
- Clopidogrel Impurity 67 (CAS 7292-71-9)
- Pyridoxine impurity 89 (CAS CATO-C4X-187789)
- Posaconazole Impurity 87 (CAS 1230634-17-9)
- Minodronic Impurity 11 (CAS 653599-20-3)
- Omarigliptin Impurity 3 (CAS 951127-25-6)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com